package com.pacage;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;

public class ContextServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.获取web.xml中配置的上下文参数context-param
        ServletContext context = getServletConfig().getServletContext();
        String username = context.getInitParameter("username");
        System.out.println("context-param参数username值是：" + username);
        System.out.println("context-param参数是password的值是：" + context.getInitParameter("password"));

        //2.获取当前工程路径、格式：/工程路径
        System.out.println("当前工程路径："+context.getContextPath());
        //3.获取工程部署后子啊服务器硬盘上的绝对路径
        System.out.println("工程部署的路径是："+context.getRealPath("/"));
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {


    }
}
